Projectile, for example for hunting purposes, and process for its manufacture

• US 4,655,140 A
• Filed: 04/18/1985
• Issued: 04/07/1987
• Est. Priority Date: 03/10/1979
• Status: Expired due to Term

• Current Assignee: Hans-Ludwig Schirneker
• Original Assignee: Hans-Ludwig Schirneker
• Inventors: Schirneker, Hans-Ludwig
• Primary Examiner(s): TUDOR, HAROLD JAY
• Application Number:
  US06/724,467
• Time in Patent Office: 719 Days
• Field of Search: 102/501-503, 102/507-516, 102/526, 102/529
• US Class Current: 102/508
• CPC Class Codes: F42B 10/22 Projectiles of cannelured type
• CPC Class Codes: F42B 10/48 Range-reducing, destabilising or braking arrangements, e.g. impact-braking arrangements; Fall-retarding means, e.g. balloons, rockets for braking or fall-retardingF42B10/34 takes precedence
• CPC Class Codes: F42B 12/34 expanding before or on impact, i.e. of dumdum or mushroom type

Abstract

A projectile suitable for example for hunting purposes, with a body tapering toward its forward end, comprising in the area of its tapered forward end a plurality of weakened locations in the form of cuts and/or notches extending at an angle obliquely to its longitudinal axis. The cuts or notches offer resistance to the rotation of the projectile in flight, so that the rotation of the projectile will be braked in flight, and projectile will drop rapidly after passing through the range of the target desired. Upon impact on a target, however, the rotation of the projectile, reduced while in flight, is appreciably enhanced and a cleaner entry and passage of the projectile is attained.

Claims

1. A projectile, comprising:

(a) a body having a tapered front end and a longitudinal axis, said body being formed with an opening extending from said front end along said longitudinal axis;

(b) a plurality of first generally longitudinal notches formed in spaced relationship in said body and extending from said forward end, said notches being inclined at an angle relative to said longitudinal axis and in a direction opposite to a direction of rotation of said projectile; and

(c) a plurality of strips defined by the spaces between said notches, said strips being rolled back upon impact of said projectile on a target, said strips when rolled back each having a front surface lying in a plane forming an oblique angle with a plane perpendicular to said longitudinal axis, said front surfaces serving to enhance rotation of said projectile in said target upon impact.

2. The projectile of claim 1, said projectile further including insert means closing the front end of said opening.

3. The projectile of claim 2, wherein said opening includes a conical expansion at said forward end, and wherein said insert means includes a disk shaped insert.

4. The projectile of claim 3, wherein said disk shaped insert comprises a truncated cone having an outer surface matingly engageable with a surface of said conical expansion.

5. The projectile of claim 1, wherein said notches are formed in an outside surface of said body.

6. The projectile of claim 5, wherein said notches extend to said opening.

7. The projectile of claim 6, said projectile further including a plurality of second notches formed rearwardly of said first notches.

8. The projectile of claim 5, wherein said notches extend radially inward from said outer surface and toward but not reaching said opening.

9. The projectile of claim 8, said projectile further including a plurality of oblique cuts in said body extending radially outward from said opening.

10. The projectile of claim 1, wherein said notches are tapered in width, the greatest width of said notches being at said forward end.

11. The projectile of claim 1, wherein said strips are generally wedge shaped in configuration.

12. The projectile of claim 2, wherein said insert means fills said center opening and has a spherical outer surface at the front of said projectile.

13. The projectile of claim 12, wherein said body is further formed with a recess in its trailing end, and filler means in said recess.

14. The projectile of claim 2, wherein said central opening extends through said body, said insert means comprises a generally spherical insert of a comparatively soft material positioned in said outer end of said opening, and plate means closing the opposite end of said opening.